Photographing optical lens assembly

ABSTRACT

An photographing optical lens assembly includes, in order from an object side to an image side, a first lens element with negative refractive power including a convex object-side surface, a second lens element with positive refractive power, a third lens element with positive refractive power including a concave object-side surface and a convex image-side surface, a fourth lens element with negative refractive power includes a concave object-side surface and a convex image-side surface, and a fifth lens element with positive refractive power including an image-side surface, an object-side surface and at least one inflection point. At least one of the object-side surface and the image-side surface of the fifth lens element is aspheric. By adjusting the photographing optical lens assembly, the total length of the photographing optical lens assembly is reduced, the aberration is corrected, and the image quality is improved.

CROSS-REFERENCE TO RELATED APPLICATIONS

This non-provisional application claims priority under 35 U.S.C. §119(a)on Patent Application No(s). 100131776 filed in Taiwan, R.O.C. on Sep.2, 2011, the entire contents of which are hereby incorporated byreference.

BACKGROUND

1. Technical Field

The present disclosure relates to a photographing optical lens assembly,and more particularly to a photographing optical lens assembly havingmultiple lenses.

2. Related Art

In recent years, with the prosperity of photographing optical lensassemblies, the demands for compact photographing cameras riseexponentially. The photo-sensing device, e.g. a sensor, of an ordinaryphotographing camera is commonly selected from a charge coupled device(CCD) and a complementary metal-oxide semiconductor (CMOS) device. Inaddition, with the advance of semiconductor manufacturing technologyenabling the miniaturization of pixel size of sensors, there areincreasing demands for compact optical lens assemblies capable ofgenerating better quality images.

A conventional compact photographing lens used in a mobile electronicdevice usually consists of four lens elements, which is disclosed inU.S. Pat. No. 7,365,920. As the high technology mobile devices, such assmart phones or PDA (Personal Digital Assistant), gain in popularity,demands for the compact photographing lens with better resolution andimage quality rise exponentially. However, the conventional four-lensassembly does not meet the requirement of the high-level photographingoptical lens assembly. With the electronic devices heading towards thedirection of high functionality while being as small and light aspossible, the inventors recognize that optical imaging system capable ofimproving the image quality of mobile electronic devices as well asminiaturizing the overall size of the camera lens equipped therewith areurgently needed.

SUMMARY

According to an embodiment, a photographing optical lens assemblycomprises, in order from an object side to an image side: a first lenselement with negative refractive power, a second lens element withpositive refractive power, a third lens element with positive refractivepower, a fourth lens element with negative refractive power, and a fifthlens element with positive refractive power. The first lens elementcomprises a convex object-side surface. The third lens element comprisesa concave object-side surface and a convex image-side surface. Thefourth lens element comprises a concave object-side surface and a conveximage-side surface. The fifth lens element comprises an image-sidesurface and an object-side surface, and at least one of the image-sidesurface and the object-side surface of the fifth lens element isaspheric. The fifth lens element further comprises at least oneinflection point.

According to an embodiment, a photographing optical lens assemblycomprises, in order from an object side to an image side: a front lensgroup and a rear lens group. The front lens group comprises two lenseswith refractive power and a stop. The two lenses with refractive powerare, in order from the object side to the image side, a first lenselement with negative refractive power and a second lens element withpositive refractive power. The first lens element comprises a convexobject-side surface. The rear lens group comprises, in order from theobject side to the image side: a third lens element with positiverefractive power, a fourth lens element with negative refractive power,and a fifth lens element with positive refractive power. The fourth lenselement comprises a concave object-side surface and a convex image-sidesurface. The fifth lens element comprises a convex object-side surfaceand an image-side surface. At least one of the image-side surface andthe object-side surface of the fifth lens element is aspheric. The fifthlens element further comprises at least one inflection point.

The photographing optical lens assembly further comprises an imageplane. The photographing optical lens assembly satisfies the followingconditions:0.75<SD/TD<1.1;  (Condition 1):0.75<f/f ₂<1.7; and  (Condition 2):0.1<T ₁₂ /T ₂₃<4.0;  (Condition 3):

Wherein T12 is the axial distance between the first lens element and thesecond lens element; T23 is the axial distance between the second lenselement and the third lens element; SD is the axial distance between thestop and the image-side surface of the fifth lens element; TD is theaxial distance between the object-side surface of the first lens elementand the image-side of the fifth lens element; f is the focal length ofthe photographing optical lens assembly; f2 is the focal length of thesecond lens element.

According to another embodiment, a photographing optical lens assemblycomprises, in order from an object side to an image side: a first lenselement with negative refractive power, a second lens element withpositive refractive power, a third lens element with positive refractivepower, a fourth lens element with negative refractive power and a fifthlens element with positive refractive power. The first lens elementcomprises a convex object-side surface. The fourth lens elementcomprises a concave object-side surface and a convex image-side surface.The fifth lens element comprises a convex object-side surface and animage-side surface. At least one of the object-side surface and theimage-side surface of the fifth lens element is aspheric. The fifth lenselement further comprises at least one inflection point.

The photographing optical lens assembly further comprises a stop and animage plane. The photographing optical lens assembly satisfies thecondition 1.

BRIEF DESCRIPTION OF THE DRAWINGS

The present disclosure will become more fully understood from thefollowing detailed description when taken in connection with theaccompanying drawings, which show, for purpose of illustrations only,and thus do not limit other possible embodiments derived from the spiritof the present disclosure, and wherein:

FIG. 1A is a schematic structural view of a first embodiment of aphotographing optical lens assembly;

FIG. 1B is a graph of longitudinal spherical aberration curves in thephotographing optical lens assembly in FIG. 1A;

FIG. 1C is a graph of astigmatic field curves in the photographingoptical lens assembly in FIG. 1A;

FIG. 1D is a graph of a distortion curve in the photographing opticallens assembly in FIG. 1A;

FIG. 2A is a schematic structural view of a second embodiment of aphotographing optical lens assembly;

FIG. 2B is a graph of longitudinal spherical aberration curves in thephotographing optical lens assembly in FIG. 2A;

FIG. 2C is a graph of astigmatic field curves in the photographingoptical lens assembly in FIG. 2A;

FIG. 2D is a graph of a distortion curve in the photographing opticallens assembly in FIG. 2A;

FIG. 3A is a schematic structural view of a third embodiment of anphotographing optical lens assembly;

FIG. 3B is a graph of longitudinal spherical aberration curves in thephotographing optical lens assembly in FIG. 3A;

FIG. 3C is a graph of astigmatic field curves in the photographingoptical lens assembly in FIG. 3A;

FIG. 3D is a graph of a distortion curve in the photographing opticallens assembly in FIG. 3A;

FIG. 4A is a schematic structural view of a fourth embodiment of aphotographing optical lens assembly;

FIG. 4B is a graph of longitudinal spherical aberration curves in thephotographing optical lens assembly in FIG. 4A;

FIG. 4C is a graph of astigmatic field curves in the photographingoptical lens assembly in FIG. 4A;

FIG. 4D is a graph of a distortion curve in the photographing opticallens assembly in FIG. 4A;

FIG. 5A is a schematic structural view of a fifth embodiment of aphotographing optical lens assembly;

FIG. 5B is a graph of longitudinal spherical aberration curves in thephotographing optical lens assembly in FIG. 5A;

FIG. 5C is a graph of astigmatic field curves in the photographingoptical lens assembly in FIG. 5A;

FIG. 5D is a graph of a distortion curve in the photographing opticallens assembly in FIG. 5A;

FIG. 6A is a schematic structural view of a sixth embodiment of aphotographing optical lens assembly;

FIG. 6B is a graph of longitudinal spherical aberration curves in thephotographing optical lens assembly in FIG. 6A;

FIG. 6C is a graph of astigmatic field curves in the photographingoptical lens assembly in FIG. 6A; and

FIG. 6D is a graph of a distortion curve in the photographing opticallens assembly in FIG. 6A.

DETAILED DESCRIPTION

The photographing optical lens assembly of the present disclosure isdescribed with FIG. 1A as an example to illustrate that the embodimentshave similar lens combinations, configuration relationships, and thesame conditions of the optical lens assembly. The differences aredescribed in detail in the following embodiments other than theembodiment described in FIG. 1.

Taking FIG. 1A as an example, the photographing optical lens assembly 10comprises, from an object side to an image side along an optical axis(from left to right in FIG. 1A) in sequence, a stop, a first lenselement 110, a second lens element 120, a third lens element 130, afourth lens element 140, a fifth lens element 150, an infrared cutfilter 160 and an image sensor 180 disposed on an image plane 170. Inthis embodiment, the stop is, for example, an aperture stop 100.

The first lens element 110 comprises an object-side surface 111 and animage-side surface 112. The refractive power of the first lens element110 is positive and the object-side surface 111 is convex for expandingthe field of view of the photographing optical lens assembly 10 andlowering the aberration caused by the first lens element 110. Therefore,a balance between expanding the field of view and correcting theaberration is achieved.

The second lens element 120 comprises an object-side surface 121 and animage-side surface 122. The refractive power of the second lens element120 is positive for providing a major part of the total refractive powerneeded by the photographing optical lens assembly 10, and therefore,reducing the total optical length of the photographing optical lensassembly 10

The third lens element 130 comprises an object-side surface 131 and animage-side surface 132. The refractive power of the third lens element130 is positive for lowering the sensitivity of the refractive power ofthe photographing optical lens assembly 10. In addition, when theobject-side surface 131 is concave and the image-side surface 132 isconvex, the aberration of the photographing optical lens assembly 10 iscorrected and the image quality is improved.

The fourth lens element 140 comprises an object-side surface 141 and animage-side surface 142. The refractive power of the fourth lens element140 is negative for correcting the chromatism of the photographingoptical lens assembly 10. In addition, the object-side surface 141 isconcave and the image-side surface 142 is convex for correcting the highorder aberration of the photographing optical lens assembly 10 andimproving the image quality.

The fifth lens element 150 comprises an object-side surface 151 and animage-side surface 152, and the fifth lens element 150 also has positiverefractive as well as the third lens element 130. In addition, it isfavorable to enhance the refractive power arrangement of the fifth lenselement 150 when the object-side surface 151 is convex. It is favorableto increase the axial distance between a principle point of thephotographing optical lens assembly 10 and the image plane 170 forshortening the total optical length of the photographing optical lensassembly 10 and the miniaturization of the photographing optical lensassembly 10 when the image-side surface 152 is concave. At least one ofthe object-side surface 151 and the image-side surface 152 is asphericfor correcting the aberration of the photographing optical lens assembly10 and shortening the total optical length of the photographing opticallens assembly 10. On the other hand, the fifth lens element 150 furthercomprises at least one inflection point 153 for reducing the angle ofincidence on the image plane 170, and, therefore, correcting theoff-axis aberrations.

The photographing optical lens assembly 10 satisfies the followingconditions:0.75<SD/TD<1.1;  (Condition 1):0.75<f/f ₂<1.7; and  (Condition 2):0.1<T ₁₂ /T ₂₃<4.0;  (Condition 3):

Wherein T12 is the axial distance between the first lens element 110 andthe second lens element 120; T23 is the axial distance between thesecond lens element 120 and the third lens element 130; SD is the axialdistance between the stop 100 and the image-side surface 152 of thefifth lens element 150; TD is the axial distance between the object-sidesurface 111 of the first lens element 110 and the image-side 152 of thefifth lens element 150; f is the focal length of the photographingoptical lens assembly 10; f2 is the focal length of the second lenselement 120.

When Condition 1 is satisfied, a balance between a telecentric effectand a wide field of view effect is achieved. When Condition 2 issatisfied, the refractive power of the second lens element 120 isfavorable for shortening the total optical length of the photographingoptical lens assembly 10 and the miniaturization of the photographingoptical lens assembly 10. In some embodiments, the photographing opticallens assembly 10 satisfies the condition: 0.9<f/f₂<1.4.

When Condition 3 is satisfied, the axial distances between the secondlens element 120 and the first lens element 110 and between the secondlens element 120 and the third lens element 130 are favorable forreducing the angle of incidence on the image plane 170, and, therefore,correcting the off-axis aberrations. In some embodiments, thephotographing optical lens assembly 10 satisfies the condition:0.1<T₁₂/T₂₃<1.5.

In this and some embodiments, the photographing optical lens assembly 10further satisfies following conditions:20<V ₂ −V ₄<70;  (condition 4):0.1<f ₂ /f ₃<0.8;  (condition 5):0.10<ET ₃₄ /T ₃₄<0.85;  (condition 6):−0.6<R ₈ /f<0; and  (condition 7):25°<HFOV<38°;  (condition 8):

wherein V₂ is the Abbe number of the second lens element 120; V₄ is theAbbe number of the fourth lens element 140; f₂ is the focal length ofthe second lens element 120; f₃ is the focal length of the third lenselement 130. T₃₄ is the axial distance between the third lens element130 and the fourth lens element 140; R₈ is the curvature radius of theimage-side surface 142 of the fourth lens element 140; f is the focallength of the photographing optical lens assembly 10; HFOV is half ofmaximal field of view in the photographing optical lens assembly 10;ET₃₄ is the horizontal air distance between the points of each maximaleffective diameter of the third lens element 130 and the fourth lenselement 140.

When Condition 4 is satisfied, the chromatism of the photographingoptical lens assembly 10 is corrected. When Condition 5 is satisfied,the arrangement of the refractive power of the photographing opticallens assembly 10 is favorable for lowering the sensitivity of therefractive power of the photographing optical lens assembly 10. WhenCondition 6 is satisfied, the axial distance between the third lenselement 130 and the fourth lens element 140 is favorable for shorteningthe total optical length of the photographing optical lens assembly 10and the assembly of the photographing optical lens assembly 10.Satisfaction of Condition 7 is favorable for the correction of theaberration of the photographing optical lens assembly 10. When Condition8 is satisfied, the photographing optical lens assembly 10 has awell-adjusted field of view.

In order to reduce the manufacturing costs, the fifth lens element 150may be made of plastic. In addition, at least one of the object-sidesurface 151 and the image-side surface 152 is aspheric. Asphericprofiles allow more design-parameter freedom for the aberrationcorrection so the total optical length of the photographing optical lensassembly 10 can be shortened effectively.

In addition, in the photographing optical lens assembly 10, a convexsurface means the surface at a paraxial site is convex; a concavesurface means a surface at a paraxial site is concave.

Furthermore, for eliminating the stray light to improve the imagequality or limiting the object image to a desirable size, at least onestop, such as a glare stop or field stop, may be disposed in thephotographing optical lens assembly 10.

As for the optical lens assembly 10, the specific schemes are furtherdescribed with the following embodiments. Parameters in the embodimentsare defined as follows. Fno is an f-number value of the photographingoptical lens assembly 10. The aspheric surface in the embodiments may berepresented by, but not limited to, the following aspheric surfaceequation (Condition ASP):

${X(Y)} = {{\left( {Y^{2}/R} \right)/\left( {1 + {{sqrt}\left( {1 - {\left( {1 + k} \right)*\left( {Y/R} \right)^{2}}} \right)}} \right)} + {\sum\limits_{i}{({Ai})*\left( Y^{i} \right)}}}$

Wherein Y is the distance from the point on the curve of the asphericsurface to the optical axis, X is the distance of a point on theaspheric surface at a distance Y from the optical axis relative to thetangential plane at the aspheric surface vertex, R is a curvatureradius, k is a conic factor, Ai is an i^(th) order aspheric surfacecoefficient, and in the embodiments, i may be, but is not limited to, 4,6, 8, 10, 12 and 14.

The First Embodiment (Embodiment 1)

FIG. 1A is a schematic structural view of the first embodiment of thephotographing optical lens assembly. The photographing optical lensassembly 10 comprises, from an object side to an image side along anoptical axis (from left to right in FIG. 1A) in sequence, the first lenselement 110, the stop, the second lens element 120, the third lenselement 130, the fourth lens element 140, the fifth lens element 150,the infrared cut filter 160 and the image sensor 180 disposed on theimage plane 170. In this embodiment, the stop is, for example, theaperture stop 100. Additionally in this embodiment, light having thereference wavelength of 587.6 nm is projected on the photographingoptical lens assembly 10.

In this embodiment, the first lens element 110 with negative refractivepower has a convex object-side surface 111 and a concave image-sidesurface 112. The second lens element 120 with positive refractive powerhas a convex object-side surface 121 and a convex image-side surface122. The third lens element 130 with positive refractive power has aconcave object-side surface 131 and a convex image-side surface 132. Thefourth lens element 140 with negative refractive power has a concaveobject-side surface 141 and a convex image-side surface 142. The fifthlens element 150 with positive refractive power has a convex object-sidesurface 151 and a concave image-side surface 152. The fifth lens element150 comprises at least one inflection point 153.

The detailed data of the photographing optical lens assembly 10 is asshown in Table 1-1 below:

TABLE 1-1 Embodiment 1 f = 6.03, Fno = 2.85, HFOV = 33.0 deg. CurvatureThickness Focal length Surface # radius(mm) (mm) Material Index Abbe #(mm) 0 Object Plano Infinity 1 Lens 1 2.617580(ASP) 0.724 Plastic 1.64023.3 −23.84 2 1.993080(ASP) 0.422 3 Ape. Stop Plano 0.275 4 Lens 214.759000(ASP) 1.053 Plastic 1.544 55.9 4.66 5 −2.981840(ASP) 1.243 6Lens 3 −2.919780(ASP) 0.944 Plastic 1.544 55.9 10.11 7 −2.124830(ASP)0.424 8 Lens 4 −0.839610(ASP) 0.834 Plastic 1.640 23.3 −3.59 9−1.834840(ASP) 0.050 10 Lens 5 2.411860(ASP) 1.928 Plastic 1.544 55.94.51 11 100.000000(ASP) 1.500 12 IR-cut filter Plano 0.300 Glass 1.51664.1 — 13 Plano 1.605 14 Image Plane Plano — Note: Reference wavelengthis d-line 587.6 nm

In Table 1-1, from the object-side surface 111 to the image-side surface152, all the surfaces can be aspheric, and the aspheric surfaces cansatisfy Condition ASP, but are not limited thereto. As for theparameters of the aspheric surfaces, reference is made to Table 1-2below:

TABLE 1-2 Aspheric Coefficients Surface # 1 2 4 5 6 k  1.61285E−01 1.66424E+00  1.00000E+00 5.30031E−01 1.00000E+00 A4 −2.61088E−03−1.94080E−02 −1.21692E−02 −1.70007E−02  −1.18120E−02  A6 −1.83808E−03−2.63893E−02 −6.68325E−03 −3.46820E−03  5.78436E−04 A8  9.32589E−04 2.20631E−02  6.07931E−03 1.40178E−03 1.46097E−04 A10 −1.04847E−04−1.44201E−02  2.05031E−03 7.26463E−04 3.01165E−04 A12 — — −5.56801E−04−1.03741E−03  — A14 — — — 4.82007E−04 — Surface # 7 8 9 10 11 k−1.29680E−01 −1.94038E+00 −1.03124E+00  −7.99668E+00  1.00000E+00 A4−6.51458E−03 −4.17311E−02 1.29493E−02 −1.44825E−03 −2.42410E−04 A6−1.11677E−03  1.02770E−02 −1.09269E−03   2.84688E−04 −2.97970E−04 A8 3.46096E−04 −8.03140E−04 2.04488E−04 −1.70285E−04 −4.50988E−05 A10 3.58696E−05 — 5.88300E−06  1.93972E−05  5.78107E−06 A12 — —−4.18823E−06  −9.73145E−07 −2.45328E−07 A14 — — 2.90076E−07 — —

In Table 1-1, the curvature radius, the thickness and the focal lengthare shown in millimeters (mm). Surface numbers 0-14 represent thesurfaces sequentially arranged from the object-side to the image-sidealong the optical axis. “f” stands for the focal length, “Fno” is thef-number, and “HFOV” is half of maximal field of view of thisembodiment. In Table 1-2, k represents the conic coefficient of theequation of the aspheric surface profiles. A1-A14 represent the asphericcoefficients ranging from the 1st order to the 16^(th) order. All labelsfor Tables of the remaining embodiments share the same definitions asthose in Table 1-1 and Table 1-2 of the first embodiment, and theirdefinitions will not be stated again.

The content of Table 1-3 may be deduced from Table 1-1:

TABLE 1-3 Embodiment 1 f (mm) 6.03 Fno 2.85 HFOV (deg.) 33.0 V₂ − V₄32.6 T₁₂/T₂₃ 0.56 ET₃₄/T₃₄ 0.51 R₈/f −0.30 f/f₂ 1.30 f₂/f₃ 0.46 SD/TD0.85

It can be observed from Table 1-3 that SD/TD equals 0.85 which satisfiesCondition 1; f/f₂ equals 1.30 which satisfies Condition 2; T₁₂/T₂₃equals 0.56 which satisfies Condition 3; V₂−V₄ equals 32.6 whichsatisfies Condition 4.

f₂/f₃ equals 0.46 which satisfies Condition 5; ET₃₄/T₃₄ equals 0.51which satisfies Condition 6; R₈/f equals −0.30 which satisfies Condition7; HFOV equals 33.0° which satisfies Condition 8.

FIG. 1B is a graph of longitudinal spherical aberration curves when thelights having wavelengths of 486.1 nm (L), 587.6 nm (M), and 656.3 nm(N) are respectively projected in the photographing optical lensassembly 10 in FIG. 1A. Horizontal axis is the focus position(millimeter, mm), and vertical axis is the normalized entrance pupil oraperture value. From FIG. 1B, the corresponding longitudinal sphericalaberrations generated by the photographing optical lens assembly 10 areshown within a range of −0.01 mm to 0.05 mm.

In the second embodiment to the tenth embodiment and the graphs of thelongitudinal spherical aberration curves in FIGS. 2B, 3B, 4B, 5B and 6B,their labeling scheme shares many similarities hence it will not berepeated herein for conciseness.

FIG. 1C is a graph of astigmatic field curves from a tangential plane(T) and a sagittal plane (S). Horizontal axis is the focus position(mm), and vertical axis is the image height (mm). From FIG. 1C, theastigmatic field curvature of the tangential plane is within a range of−0.04 mm to 0.04 mm, and the astigmatic field curvature of the sagittalplane is within a range of −0.05 mm to 0.01 mm.

In the second embodiment to the tenth embodiment and the graphs of theastigmatic field curves in FIGS. 2C, 3C, 4C, 5C and 6C, their labelingscheme shares many similarities hence it will not be repeated herein forconciseness.

FIG. 1D is a graph of a distortion curve in the photographing opticallens assembly 10 in FIG. 1A. The horizontal axis is the distortion ratio(%), and the vertical axis is the image height (mm). It can be observedfrom FIG. 1D that the distortion ratio corresponding to the light havingwavelength of 587.6 nm is within a range of −1.5% to 0.5%. As shown inFIGS. 1B to 1D, the photographing optical lens assembly 10, designedaccording to the first embodiment, is capable of effectively correctingvarious aberrations.

In the second embodiment to the tenth embodiment and the graph of thedistortion curves in FIGS. 2D, 3D, 4D, 5D and 6D, the solid line Gindicates the distortion curve of the light having the wavelength of587.6 nm, which will not be repeated herein for conciseness.

It should be noted that the distortion curves and the astigmatic fieldcurves of the wavelength of 486.1 nm and 656.3 nm are highly similar tothe distortion curve and the astigmatic field curves of the wavelengthof 587.6 nm. In order to prevent the confusion of reading the curves inFIGS. 1C and 1D, the distortion curve and the astigmatic field curves ofwavelengths of 486.1 nm and 656.3 nm are not shown in FIGS. 1C and 1D,and the same applies throughout the rest of the embodiments of thispresent disclosure.

The Second Embodiment (Embodiment 2)

FIG. 2A is a schematic structural view of the second embodiment of thephotographing optical lens assembly. The specific implementation andelements of the second embodiment are substantially the same as those inthe first embodiment. The element symbols in the second embodiment allbegin with “2” which correspond to those in the first embodiment withthe same function or structure. For conciseness, only the differencesare illustrated below, and the similarities will not be repeated herein.

In this embodiment, for example, the reference wavelength of the lightreceived by the photographing optical lens assembly 20 is 587.6 nm.

In this embodiment, a first lens element 210 with negative refractivepower comprises a convex object-side surface and a concave image-sidesurface 211. A second lens element 220 with positive refractive powercomprises convex object-side surface 221 and a convex image-side surface222. A third lens element 230 with positive refractive power comprises aconcave object-side surface 231 and a convex image-side surface 232. Afourth lens element 240 with negative refractive power comprises aconcave object-side surface 241 and a convex image-side surface 242. Afifth lens element 250 with positive refractive power comprises a convexobject-side surface 251, a concave image-side surface 252 and at leastone inflection point 253.

The detailed data of the photographing optical lens assembly 20 is asshown in Table 2-1 below:

TABLE 2-1 Embodiment 2 f = 6.03, Fno = 2.85, HFOV = 33.0 deg. CurvatureThickness Focal length Surface # radius(mm) (mm) Material Index Abbe #(mm) 0 Object Plano Infinity 1 Lens 1 3.168110(ASP) 0.859 Plastic 1.64023.3 −28.41 2 2.412420(ASP) 0.364 3 Ape. Stop Plano 0.214 4 Lens 216.446000(ASP) 0.986 Plastic 1.544 55.9 5.25 5 −3.381500(ASP) 1.059 6Lens 3 −3.514500(ASP) 1.008 Plastic 1.544 55.9 7.51 7 −2.080880(ASP)0.463 8 Lens 4 −0.829740(ASP) 0.911 Plastic 1.640 23.3 −3.49 9−1.885360(ASP) 0.050 10 Lens 5 2.488050(ASP) 1.835 Plastic 1.544 55.94.66 11 100.000000(ASP) 1.700 12 IR-cut filter Plano 0.300 Glass 1.51664.1 — 13 Plano 1.745 14 Image Plane Plano — Note: Reference wavelengthis d-line 587.6 nm

In Table 2-1, from the object-side surface 211 to the image-side surface252, all the surfaces can be aspheric, and the aspheric surfaces cansatisfy Condition ASP, but are not limited thereto. As for theparameters of the aspheric surfaces, reference is made to Table 2-2below.

TABLE 2-2 Aspheric Coefficients Surface # 1 2 4 5 6 k 3.68955E−01 2.91966E+00 −5.17295E+01  1.00000E+00  1.00000E+00 A4 −1.11117E−03 −1.84047E−02 −1.83752E−02 −2.44173E−02 −1.69985E−02 A6 −5.58797E−04 −2.48909E−02 −1.05604E−02 −3.58852E−03 −6.23922E−04 A8 4.30973E−04 2.09675E−02  6.57801E−03  2.85837E−04 −5.26599E−04 A10 2.92763E−05−1.38501E−02 −2.72368E−04 −2.57130E−04  2.60380E−04 A12 — — −5.56801E−04−2.20935E−06 — A14 — — —  7.06190E−05 — Surface # 7 8 9 10 11 k−2.01092E−01 −1.85204E+00 −9.82221E−01  −7.46359E+00  1.00000E+00 A4−3.55014E−03 −4.04515E−02 1.20640E−02 −1.03691E−03  9.27060E−04 A6−1.32961E−03  9.97271E−03 −1.12264E−03   2.77277E−04 −4.32230E−04 A8 1.80508E−04 −8.03283E−04 2.01653E−04 −1.73485E−04 −4.30777E−05 A10−2.76032E−05 — 9.03066E−06  1.94778E−05  6.32881E−06 A12 — —−3.64227E−06  −9.55273E−07 −2.80552E−07 A14 — — 1.61756E−07 — —

The content of Table 2-3 may be deduced from Table 2-1.

TABLE 2-3 Embodiment 2 f (mm) 6.03 Fno 2.85 HFOV (deg.) 33.0 V₂ − V₄32.6 T₁₂/T₂₃ 0.55 ET₃₄/T₃₄ 0.48 R₈/f −0.31 f/f₂ 1.15 f₂/f₃ 0.70 SD/TD0.84

FIG. 2B is a graph of longitudinal spherical aberration curves when thelights having wavelengths of 486.1 nm (L), 587.6 nm (M), and 656.3 nm(N) are projected in the photographing optical lens assembly 20 in FIG.2A. From FIG. 2B, the corresponding longitudinal spherical aberrationsgenerated by the photographing optical lens assembly 20 are shown withina range of −0.02 mm to 0.05 mm.

FIG. 2C is a graph of astigmatic field curves from a tangential plane(T) and a sagittal plane (S). From FIG. 2C, the astigmatic fieldcurvature of the tangential plane is within a range of 0 mm to 0.04 mm,and the astigmatic field curvature of the sagittal plane is within arange of −0.05 mm to 0.01 mm.

FIG. 2D is a graph of a distortion curve in the photographing opticallens assembly 20 in FIG. 2A. It can be observed from FIG. 2D that thedistortion ratio is within a range of −1.5% to 0.5%. As shown in FIGS.2B to 2D, the photographing optical lens assembly 20, designed accordingto the second embodiment, is capable of effectively correcting variousaberrations.

The Third Embodiment (Embodiment 3)

FIG. 3A is a schematic structural view of the third embodiment of thephotographing optical lens assembly. The specific implementation andelements of the third embodiment are substantially the same as those inthe first embodiment. The element symbols in the third embodiment allbegin with “3” which correspond to those in the first embodiment withthe same function or structure. For conciseness, only the differencesare illustrated below, and the similarities will not be repeated herein.

In this embodiment, for example, the reference wavelength of the lightreceived by the photographing optical lens assembly 30 is 587.6 nm.

In this embodiment, a first lens element 310 with negative refractivepower comprises a convex object-side surface 311 and a concaveimage-side surface 312. A second lens element 320 with positiverefractive power comprises a convex object-side surface 321 and a conveximage-side surface 322. A third lens element 330 with positiverefractive power comprises a concave object-side surface 331 and aconvex image-side surface 332. A fourth lens element 340 with negativerefractive power comprises a concave object-side surface 341 and aconvex image-side surface 342. A fifth lens element 350 with positiverefractive power comprises a convex object-side surface 351, a concaveimage-side surface 352 and at least one inflection point 353.

The detailed data of the photographing optical lens assembly 30 is asshown in Table 3-1 below.

TABLE 3-1 Embodiment 3 f = 6.20, Fno = 2.90, HFOV = 32.3 deg. CurvatureThickness Focal length Surface # radius(mm) (mm) Material Index Abbe #(mm) 0 Object Plano Infinity 1 Lens 1 2.589700(ASP) 0.564 Plastic 1.56971.3 −24.78 2 2.015030(ASP) 0.449 3 Ape. Stop Plano 0.322 4 Lens 212.361100(ASP) 1.086 Plastic 1.544 55.9 4.64 5 −3.072700(ASP) 1.237 6Lens 3 −2.925200(ASP) 1.089 Plastic 1.544 55.9 9.85 7 −2.140580(ASP)0.421 8 Lens 4 −0.857370(ASP) 0.846 Plastic 1.640 23.3 −3.52 9−1.915960(ASP) 0.187 10 Lens 5 2.286040(ASP) 1.718 Plastic 1.544 55.94.69 11 16.103100(ASP) 1.600 12 IR-cut filter Plano 0.300 Glass 1.51664.1 — 13 Plano 1.651 14 Image Plane Plano — Note: Reference wavelengthis d-line 587.6 nmIn Table 3-1, from the object-side surface 311 to the image-side surface352, all surfaces can be aspheric, and the aspheric surfaces can satisfyCondition ASP, but are not limited thereto. As for the parameters of theaspheric surfaces, reference is made to Table 3-2 below.

TABLE 3-2 Aspheric Coefficients Surface # 1 2 4 5 6 k  4.51369E−02 1.69345E+00  1.00000E+00 3.98751E−01 9.81615E−01 A4 −3.67124E−03−1.99390E−02 −1.00541E−02 −1.52415E−02  −1.11877E−02  A6 −1.57425E−03−2.78258E−02 −5.98049E−03 −3.73591E−03  5.18544E−04 A8  8.34654E−04 2.24431E−02  5.28213E−03 1.69638E−03 1.69243E−04 A10 −4.41915E−05−1.46176E−02  2.16357E−03 9.20851E−04 2.85586E−04 A12 — — −6.37017E−04−1.03587E−03  — A14 — — — 4.46123E−04 — Surface # 7 8 9 10 11 k−1.43769E−01 −1.95542E+00 −1.05335E+00  −6.21581E+00 −6.94168E+01 A4−8.46543E−03 −4.38015E−02 1.32906E−02 −1.52115E−03 −1.17116E−03 A6−1.12277E−03  1.02017E−02 −1.09613E−03   4.08234E−04 −1.25816E−04 A8 3.20316E−04 −8.09905E−04 2.07161E−04 −1.70656E−04 −4.42654E−05 A10 2.46112E−05 — 6.54332E−06  1.94710E−05  5.45171E−06 A12 — —−4.40947E−06  −9.20358E−07 −2.49597E−07 A14 — — 2.85987E−07 — —

The content of Table 3-3 may be deduced from Table 3-1.

TABLE 3-3 Embodiment 3 f (mm) 6.20 Fno 2.90 HFOV (deg.) 32.3 V₂ − V₄32.6 T₁₂/T₂₃ 0.62 ET₃₄/T₃₄ 0.65 R₈/f −0.31 f/f₂ 1.34 f₂/f₃ 0.47 SD/TD0.87

FIG. 3B is a graph of longitudinal spherical aberration curves when thelights having wavelengths of 486.1 nm (L), 587.6 nm (M), and 656.3 nm(N) are projected in the photographing optical lens assembly 30 in FIG.3A. From FIG. 3B, the corresponding longitudinal spherical aberrationsgenerated by the photographing optical lens assembly 30 are shown withina range of −0.10 mm to 0.05 mm.

FIG. 3C is a graph of astigmatic field curves from a tangential plane(T) and a sagittal plane (S). From FIG. 3C, the astigmatic fieldcurvature of the tangential plane is within a range of −0.05 mm to 0.01mm, and the astigmatic field curvature of the sagittal plane is within arange of −0.075 mm to 0 mm.

FIG. 3D is a graph of a distortion curve in the photographing opticallens assembly 30 in FIG. 3A. It can be observed from FIG. 3D that thedistortion ratio is within a range of −1.5% to 0%. As shown in FIGS. 3Bto 3D, the photographing optical lens assembly 30, designed according tothe third embodiment, is capable of effectively correcting variousaberrations.

The Fourth Embodiment (Embodiment 4)

FIG. 4A is a schematic structural view of the fourth embodiment of thephotographing optical lens assembly. The specific implementation andelements of the fourth embodiment are substantially the same as those inthe first embodiment. The element symbols in the fourth embodiment allbegin with “4” which correspond to those in the first embodiment withthe same function or structure. For conciseness, only the differencesare illustrated below, and the similarities will not be repeated herein.

In this embodiment, for example, the reference wavelength of the lightreceived by the photographing optical lens assembly 40 is 587.6 nm.

In this embodiment, a first lens element 410 with negative refractivepower comprises a convex object-side surface 411 and a concaveimage-side surface 412. A second lens element 420 with positiverefractive power comprises convex image-side surface 421 and a convexobject-side surface 422. A third lens element 430 with positiverefractive power comprises a concave object-side surface 431 and aconvex image-side surface 432. A fourth lens element 440 with negativerefractive power comprises a concave object-side surface 441 and aconvex image-side surface 442. A fifth lens element 450 with positiverefractive power comprises a convex object-side surface 451, a conveximage-side surface 452 and at least one inflection point 453.

The detailed data of the photographing optical lens assembly 40 is asshown in Table 4-1 below.

TABLE 4-1 Embodiment 4 f = 6.04, Fno = 2.87, HFOV = 32.7 deg. CurvatureThickness Focal length Surface # radius(mm) (mm) Material Index Abbe #(mm) 0 Object Plano Infinity 1 Lens 1 3.261100(ASP) 0.813 Plastic 1.64023.3 −27.72 2 2.486670(ASP) 0.334 3 Ape. Stop Plano 0.150 4 Lens 2−47.393400(ASP) 1.006 Plastic 1.544 55.9 5.02 5 −2.600180(ASP) 1.170 6Lens 3 −3.382000(ASP) 0.992 Plastic 1.544 55.9 8.26 7 −2.129630(ASP)0.475 8 Lens 4 −0.843340(ASP) 0.959 Plastic 1.634 23.8 −3.49 9−1.963920(ASP) 0.050 10 Lens 5 2.719170(ASP) 1.939 Plastic 1.544 55.94.68 11 −29.696400(ASP) 2.000 12 IR-cut filter Plano 0.300 Glass 1.51664.1 — 13 Plano 1.494 14 Image Plane Plano — Note: Reference wavelengthis d-line 587.6 nm

In Table 4-1, from the object-side surface 411 to the image-side surface452, all surfaces can be aspheric, and the aspheric surfaces can satisfyCondition ASP, but are not limited thereto. As for the parameters of theaspheric surfaces, reference is made to Table 4-2 below.

TABLE 4-2 Aspheric Coefficients Surface # 1 2 4 5 6 k 5.23110E−01 3.17690E+00 −9.00000E+01  8.06692E−01 7.63452E−01 A4 −1.72755E−04 −1.44517E−02 −2.91633E−02 −2.13342E−02 −1.40298E−02  A6 −4.03855E−04 −2.07054E−02 −1.10654E−02 −4.06166E−03 1.89814E−04 A8 1.80080E−04 1.26644E−02  4.35090E−03 −2.18997E−04 −5.57783E−04  A10 1.62688E−04−7.11193E−03 −6.87270E−03 −5.78620E−04 2.03804E−04 A12 — —  3.91678E−03−8.98896E−05 — A14 — — —  2.76678E−06 — Surface # 7 8 9 10 11 k−1.73187E−01 −1.83378E+00 −9.82589E−01  −8.10013E+00 −7.71259E+01 A4−5.12916E−03 −3.96780E−02 1.21072E−02 −2.19741E−03  1.59275E−03 A6−1.48602E−03  1.00386E−02 −1.14956E−03   3.51887E−04 −4.73570E−04 A8 2.25790E−04 −8.05941E−04 1.99197E−04 −1.81000E−04 −4.26605E−05 A10−2.36862E−05 — 8.79146E−06  1.91822E−05  6.41126E−06 A12 — —−3.59680E−06  −8.81348E−07 −2.75483E−07 A14 — — 1.63187E−07 — —

The content of Table 4-3 may be deduced from Table 4-1.

TABLE 4-3 Embodiment 4 f (mm) 6.04 Fno 2.87 HFOV (deg.) 32.7 V₂ − V₄32.1 T₁₂/T₂₃ 0.41 ET₃₄/T₃₄ 0.48 R8/f −0.33 f/f2 1.20 f2/f3 0.61 SD/TD0.85

FIG. 4B is a graph of longitudinal spherical aberration curves when thelights having wavelengths of 486.1 nm (L), 587.6 nm (M), and 656.3 nm(N) are projected in the photographing optical lens assembly 40 in FIG.4A. From FIG. 4B, the corresponding longitudinal spherical aberrationsgenerated by the photographing optical lens assembly 40 are shown withina range of −0.05 mm to 0.05 mm.

FIG. 4C is a graph of astigmatic field curves from a tangential plane(T) and a sagittal plane (S). From FIG. 4C, the astigmatic fieldcurvature of the tangential plane is within a range of −0.025 mm to 0.02mm, and the astigmatic field curvature of the sagittal plane is within arange of −0.05 mm to 0 mm.

FIG. 4D is a graph of a distortion curve in the photographing opticallens assembly 40 in FIG. 4A. It can be observed from FIG. 4D that thedistortion ratio is within a range of −0.5% to 1.0%. As shown in FIGS.4B to 4D, the photographing optical lens assembly 40, designed accordingto the fourth embodiment, is capable of effectively correcting variousaberrations.

The Fifth Embodiment (Embodiment 5)

FIG. 5A is a schematic structural view of the fifth embodiment of thephotographing optical lens assembly. The specific implementation andelements of the fifth embodiment are substantially the same as those inthe first embodiment. The element symbols in the fifth embodiment allbegin with “5” which correspond to those in the first embodiment withthe same function or structure. For conciseness, only the differencesare illustrated below, and the similarities will not be repeated herein.

In this embodiment, for example, the reference wavelength of the lightreceived by the photographing optical lens assembly 50 is 587.6 nm.

In this embodiment, a first lens element 510 with negative refractivepower comprises a convex object-side surface 511 and a concaveimage-side surface 512. A second lens element 520 with positiverefractive power comprises a convex object-side surface 521 and a conveximage-side surface 522. A third lens element 530 with positiverefractive power comprises a concave object-side surface 531 and aconvex image-side surface 532. A fourth lens element 540 with negativerefractive power comprises a concave object-side surface 541 and aconvex image-side surface 542. A fifth lens element 550 with positiverefractive power comprises a convex object-side surface 551, a concaveimage-side surface 552 and at least one inflection point 553.

The detailed data of the photographing optical lens assembly 50 is asshown in Table 5-1 below.

TABLE 5-1 Embodiment 5 f = 6.10, Fno = 3.00, HFOV = 32.6 deg. CurvatureThickness Focal length Surface # radius(mm) (mm) Material Index Abbe #(mm) 0 Object Plano Infinity 1 Lens 1 2.468550(ASP) 0.472 Plastic 1.64023.3 −26.31 2 1.992230(ASP) 0.418 3 Ape. Stop Plano 0.278 4 Lens 2−29.673600(ASP) 1.019 Plastic 1.544 55.9 4.89 5 −2.472190(ASP) 1.512 6Lens 3 −2.973250(ASP) 1.022 Plastic 1.535 56.3 10.28 7 −2.160310(ASP)0.464 8 Lens 4 −0.847840(ASP) 0.861 Plastic 1.640 23.3 −3.66 9−1.857070(ASP) 0.050 10 Lens 5 2.300710(ASP) 1.756 Plastic 1.544 55.94.63 11 19.230800(ASP) 1.600 12 IR-cut filter Plano 0.300 Glass 1.51664.1 — 13 Plano 1.618 14 Image Plane Plano — Note: Reference wavelengthis d-line 587.6 nmIn Table 5-1, from the object-side surface 511 to image-side surface552, all the surfaces can be aspheric, and the aspheric surfaces cansatisfy Condition ASP, but are not limited thereto. As for theparameters of the aspheric surfaces, reference is made to Table 5-2below.

TABLE 5-2 Aspheric Coefficients Surface # 1 2 4 5 6 k 3.40340E−01 1.91141E+00  1.00000E+00 5.33045E−01 9.74708E−01 A4 −4.54095E−04 −1.63063E−02 −2.06813E−02 −1.67467E−02  −1.01970E−02  A6 −1.57521E−03 −2.41103E−02 −1.15274E−02 −4.02034E−03  7.96391E−04 A8 1.45892E−03 1.91901E−02  5.05576E−03 9.51642E−04 7.87207E−05 A10 2.91486E−04−1.26194E−02  4.26000E−03 2.71012E−04 2.10532E−04 A12 — — −1.10194E−04−1.15724E−03  — A14 — — — 5.63132E−04 — Surface # 7 8 9 10 11 k−1.48833E−01 −2.00550E+00 −1.04254E+00  −7.02968E+00 −1.70025E+01 A4−8.76874E−03 −4.22901E−02 1.32040E−02 −1.56014E−03 −1.23902E−03 A6−1.23942E−03  1.01700E−02 −1.05327E−03   3.08552E−04 −2.78032E−04 A8 3.36590E−04 −8.12018E−04 2.03459E−04 −1.74111E−04 −4.18139E−05 A10 3.24348E−05 — 5.16210E−06  1.95070E−05  5.85250E−06 A12 — —−4.31884E−06  −8.70757E−07 −2.48019E−07 A14 — — 2.82594E−07 — —

The content of Table 5-3 may be deduced from Table 5-1.

TABLE 5-3 Embodiment 5 f (mm) 6.10 Fno 3.00 HFOV (deg.) 32.6 V₂ − V₄32.6 T₁₂/T₂₃ 0.46 ET₃₄/T₃₄ 0.61 R₈/f −0.30 f/f₂ 1.25 f₂/f₃ 0.48 SD/TD0.89

FIG. 5B is a graph of longitudinal spherical aberration curves when thelights having wavelengths of 486.1 nm (L), 587.6 nm (M), and 656.3 nm(N) are projected in the photographing optical lens assembly 50 in FIG.5A. From FIG. 5B, the corresponding longitudinal spherical aberrationsgenerated by the photographing optical lens assembly 50 are shown withina range of −0.05 mm to 0.05 mm.

FIG. 5C is a graph of astigmatic field curves from a tangential plane(T) and a sagittal plane (S). From FIG. 5C, the astigmatic fieldcurvature of the tangential plane is within a range of −0.05 mm to 0.01mm, and the astigmatic field curvature of the sagittal plane is within arange of −0.06 mm to 0 mm.

FIG. 5D is a graph of a distortion curve in the photographing opticallens assembly 50 in FIG. 5A. It can be observed from FIG. 5D that thedistortion ratio is within a range of −1.0% to 0.5%. As shown in FIGS.5B to 5D, the photographing optical lens assembly 50, designed accordingto the fifth embodiment, is capable of effectively correcting variousaberrations.

The Sixth Embodiment (Embodiment 6)

FIG. 6A is a schematic structural view of the sixth embodiment of thephotographing optical lens assembly. The specific implementation andelements of the sixth embodiment are substantially the same as those inthe first embodiment. The element symbols in the sixth embodiment allbegin with “6” which correspond to those in the first embodiment withthe same function or structure. For conciseness, only the differencesare illustrated below, and the similarities will not be repeated herein.

In this embodiment, for example, the reference wavelength of the lightreceived by the photographing optical lens assembly 60 is 587.6 nm.

In this embodiment, a first lens element 610 with negative refractivepower comprises a convex object-side surface 611 and a concaveimage-side surface 612. A second lens element 620 with positiverefractive power comprises convex image-side surface 621 and a convexobject-side surface 622. A third lens element 630 with positiverefractive power comprises a concave object-side surface 631 and aconvex image-side surface 632. A fourth lens element 640 with negativerefractive power comprises a concave object-side surface 641 and aconvex image-side surface 642. A fifth lens element 650 with positiverefractive power comprises a convex object-side surface 651, a concaveimage-side surface 652 and at least one inflection point 653. Inaddition, a stop is between the object side and the first lens element610. In this embodiment, the stop is, for example, an aperture stop 600.

The detailed data of the photographing optical lens assembly 60 is asshown in Table 6-1 below.

TABLE 6-1 Embodiment 6 f = 6.30, Fno = 3.15, HFOV = 31.5 deg. CurvatureThickness Focal length Surface # radius(mm) (mm) Material Index Abbe #(mm) 0 Object Plano Infinity 1 Ape. Stop Plano −0.146 2 Lens 13.037200(ASP) 0.364 Plastic 1.634 23.8 −29.02 3 2.485590(ASP) 0.387 4Lens 2 7.119100(ASP) 1.070 Plastic 1.544 55.9 5.49 5 −4.875800(ASP)1.209 6 Lens 3 −3.678600(ASP) 0.848 Plastic 1.544 55.9 8.65 7−2.232770(ASP) 0.800 8 Lens 4 −0.846060(ASP) 0.857 Plastic 1.634 23.8−3.40 9 −1.939640(ASP) 0.050 10 Lens 5 2.090290(ASP) 1.754 Plastic 1.54455.9 4.57 11 9.185700(ASP) 1.400 12 IR-cut filter Plano 0.300 Glass1.516 64.1 — 13 Plano 1.419 14 Image Plane Plano — Note: Referencewavelength is d-line 587.6 nm

In Table 6-1, from the object-side surface 611 to the image-side surface652, all surfaces can be aspheric, and the aspheric surfaces can satisfyCondition ASP, but are not limited thereto. As for the parameters of theaspheric surfaces, reference is made to Table 6-2 below.

TABLE 6-2 Aspheric Coefficients Surface # 1 2 4 5 6 k −9.60731E−01 2.73480E+00 −2.72559E+01  2.51830E−01  9.03335E−01 A4 −8.81577E−03−4.10400E−02 −1.29586E−02 −2.28563E−02 −1.60801E−02 A6  9.42722E−03 1.08989E−03 −5.79255E−03 −3.44818E−03 −8.02303E−04 A8 −4.11731E−03−2.90246E−03  2.55334E−03  7.85629E−05 −7.84916E−04 A10  1.11424E−03−2.85671E−03 −3.00875E−03 −2.34526E−04  2.31439E−04 A12 — —  1.68039E−03−2.08440E−05 — A14 — — —  2.03533E−05 — Surface # 7 8 9 10 11 k−1.85203E−01 −2.08998E+00 −1.01704E+00  −6.30288E+00  2.11880E−01 A4−3.03202E−03 −4.05619E−02 1.27367E−02  1.23589E−03  8.96975E−04 A6−1.79537E−03  1.01236E−02 −1.09980E−03   2.35029E−04 −5.07070E−04 A8 1.62294E−04 −8.02788E−04 2.07670E−04 −1.83156E−04 −4.64891E−05 A10−2.20952E−05 — 1.04376E−05  1.92612E−05  6.21023E−06 A12 — —−3.55037E−06  −8.43191E−07 −2.33459E−07 A14 — — 1.40028E−07 — —

The content of Table 6-3 may be deduced from Table 6-1.

TABLE 6-3 Embodiment 6 f (mm) 6.30 Fno 3.15 HFOV (deg.) 31.5 V₂ − V₄32.1 T₁₂/T₂₃ 0.32 ET₃₄/T₃₄ 0.75 R₈/f −0.31 f/f₂ 1.15 f₂/f₃ 0.63 SD/TD0.98

FIG. 6B is a graph of longitudinal spherical aberration curves when thelights having wavelengths of 486.1 nm (L), 587.6 nm (M), and 656.3 nm(N) are projected in the photographing optical lens assembly 60 in FIG.3A. From FIG. 6B, the corresponding longitudinal spherical aberrationsgenerated by the photographing optical lens assembly 60 are within arange of −0.025 mm to 0.05 mm.

FIG. 6C is a graph of astigmatic field curves from a tangential plane(T) and a sagittal plane (S). It can be observed from FIG. 6C that theastigmatic field curvature of the tangential plane is within a range of−0.05 mm to 0.025 mm, and the astigmatic field curvature of the sagittalplane is within a range of −0.05 mm to 0 mm.

FIG. 6D is a graph of a distortion curve in the photographing opticallens assembly 60 in FIG. 6A. It can be observed from FIG. 6D that thedistortion ratio is within a range of −0.5% to 1.5%. As shown in FIGS.6B to 6D, the photographing optical lens assembly 60, designed accordingto the sixth embodiment, is capable of effectively correcting variousaberrations.

What is claimed is:
 1. A photographing optical lens assembly comprising,in order from an object side to an image side: a first lens element withnegative refractive power comprising a convex object-side surface; asecond lens element with positive refractive power; a third lens elementwith positive refractive power comprising a concave object-side surfaceand a convex image-side surface; a fourth lens element with negativerefractive power comprising a concave object-side surface and a conveximage-side surface; and a fifth lens element with positive refractivepower comprising an object-side surface, an image-side surface and atleast one inflection point, and at least one of the object-side surfaceand the image-side surface being aspheric, wherein the object-sidesurface of the fifth lens element is convex and the fifth lens elementis made of plastic, and wherein the photographing optical lens assemblyfurther satisfies the following condition:0.75<f/f2<1.7, wherein f is the focal length of the photographingoptical lens assembly and f2 is the focal length of the second lenselement.
 2. The photographing optical lens assembly according to claim1, wherein the photographing optical lens assembly satisfies thefollowing condition:20<V ₂ −V ₄<70; wherein V₂ is the Abbe number of the second lenselement; V₄ is the Abbe number of the fourth lens element.
 3. Thephotographing optical lens assembly according to claim 1, furthercomprising a stop and an image plane, and the photographing optical lensassembly satisfying the following condition:0.75<SD/TD<1.1; wherein SD is an axial distance between the stop and theimage-side surface of the fifth lens element; TD is an axial distancebetween the object-side surface of the first lens element and theimage-side surface of the fifth lens element.
 4. The photographingoptical lens assembly according to claim 1, wherein the photographingoptical lens assembly satisfies the following condition:0.1<f ₂ /f ₃<0.8; wherein f₂ is the focal length of the second lenselement; f₃ is the focal length of the third lens element.
 5. Thephotographing optical lens assembly according to claim 1, wherein thephotographing optical lens assembly satisfies the following condition:−0.6<R ₈ /f<0; wherein R₈ is the curvature radius of the image-sidesurface of the fourth lens element; f is the focal length of thephotographing optical lens assembly.
 6. The photographing optical lensassembly according to claim 5, wherein the photographing optical lensassembly satisfies the following condition:25°<HFOV<38°; wherein HFOV is half of maximal field of view in thephotographing optical lens assembly.
 7. A photographing optical lensassembly comprising, in order from an object side to an image side: afront lens group, comprising two lens elements with refractive power anda stop, and the two lens elements comprising, in order from the objectside to the image side: a first lens element with negative refractivepower comprising a convex object-side surface; and a second lens elementwith positive refractive power; and a rear lens group, comprising, inorder from the object side to the image side: a third lens element withpositive refractive power; a fourth lens element with negativerefractive power having a concave object-side surface and a conveximage-side surface; and a fifth lens element with positive refractivepower comprising a convex object-side surface, an image-side surface andat least one inflection point, and at least one of the object-sidesurface and the image-side surface being aspheric; the photographingoptical lens assembly further comprising an image plane, and satisfyingthe following condition:0.75<SD/TD<1.1;0.75<f/f ₂<1.7; and0.1<T ₁₂ /T ₂₃<4.0; wherein T₁₂ is an axial distance between the firstlens element and the second lens element; T₂₃ is an axial distancebetween the second lens element and the third lens element; SD is anaxial distance between the stop and the image-side surface of the fifthlens element; TD is an axial distance between the object-side surface ofthe first lens element and the image-side surface of the fifth lenselement; f is the focal length of the photographing optical lensassembly; f2 is the focal length of the second lens element.
 8. Thephotographing optical lens assembly according to claim 7, wherein thephotographing optical lens assembly satisfies the following condition:−0.6<R ₈ /f<0; wherein f is the focal length of the photographingoptical lens assembly; R₈ is the curvature radius of the image-sidesurface of the fourth lens element.
 9. The photographing optical lensassembly according to claim 7, wherein the third lens element comprisesa concave object-side surface and a convex image-side surface, and thefifth lens element is made of plastic.
 10. The photographing opticallens assembly according to claim 9, wherein the photographing opticallens assembly satisfies the following condition:0.9<f/f ₂<1.4; wherein f is the focal length of the photographingoptical lens assembly; f₂ is the focal length of the second lenselement.
 11. The photographing optical lens assembly according to claim9, wherein the photographing optical lens assembly satisfies thefollowing condition:0.1<f ₂ /f ₃<0.8; wherein f₂ is the focal length of the second lenselement; f₃ is the focal length of the third lens element.
 12. Thephotographing optical lens assembly according to claim 9, wherein thephotographing optical lens assembly satisfies the following condition:0.1<T ₁₂ /T ₂₃<1.5; wherein T₁₂ is an axial distance between the firstlens element and the second lens element; T₂₃ is an axial distancebetween the second lens element and the third lens element.
 13. Thephotographing optical lens assembly according to claim 9, wherein thephotographing optical lens assembly satisfies the following condition:25°<HFOV<38°; wherein HFOV is half of maximal field of view in thephotographing optical lens assembly.
 14. A photographing optical lensassembly comprising five lens elements with refractive power, in orderfrom an object side to an image side: a first lens element with negativerefractive power comprising a convex object-side surface; a second lenselement with positive refractive power; a third lens element withpositive refractive power which comprises a concave object-side surfaceand a convex image-side surface; a fourth lens element with negativerefractive power comprising a concave object-side surface and a conveximage-side surface; and a fifth lens element with positive refractivepower comprising a convex object-side surface, an image-side surface,and at least one inflection point, the fifth lens element being made ofplastic and at least one of the object-side surface and the image-sidesurface being aspheric; the photographing optical lens assembly furthercomprising a stop and an image plane, and satisfying the followingcondition:0.75<SD/TD<1.1; and−0.6<R8/f<0; wherein SD is an axial distance between the stop and theimage-side surface of the fifth lens element; TD is an axial distancebetween the object-side surface of the first lens element and theimage-side surface of the fifth lens element; and f is the focal lengthof the photographing optical lens assembly; R8 is the curvature radiusof the image-side surface of the fourth lens element.
 15. Thephotographing optical lens assembly according to claim 14, wherein thephotographing optical lens assembly satisfies the following condition:0.75<f/f ₂<1.7; wherein f is the focal length of the photographingoptical lens assembly; f₂ is the focal length of the second lenselement.
 16. The photographing optical lens assembly according to claim14, wherein the photographing optical lens assembly satisfies thefollowing condition:20<V ₂ −V ₄<70; wherein V₂ is the Abbe number of the second lenselement; V₄ is the Abbe number of the fourth lens element.
 17. Thephotographing optical lens assembly according to claim 14, wherein theimage-side surface of the fifth lens element is concave.